Milodon's Megaflow Competition Valves are independently tested to flow better, increase horsepower and extended valve spring life. These valves are much lighter than OEM and most aftermarket valves bringing quicker and higher RPM's. All valves are made of premium quality 21-4N material with one-piece forging. With a 1600°F operating temperature, megaflow valves offer high tensile strength to hold up to high valve train loads. Megaflow valves feature tulipped heads, stellite tips, undercut stems and are swirl polished, all for better flow and weight savings and resistance to wear. Megaflow competition valves are proven second to none for performance and reliability.